Consider the charge distribution shown in the  figure. The distance d is 1.4 cm, and all the charges  are equal to q=+12nC  a. What is the electric potential energy of  the charge configuration of the figure  below?  b. What is electric field and electric  potential in point P? c. How does the energy of the  configuration change if you put negative  q=−12nC in point P.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.